Google Tag Manager vs Piwik PRO Tag Manager

Google Tag Manager has no write-up on Specifiction yet; its figures are above.

Piwik PRO Tag Manager deploys, updates, and controls tracking tags across websites and apps. Tag templates, triggers, and conditions define tag behavior, with JavaScript customization available for tags and variables. A test environment and debug mode let teams inspect tags before publishing, while integration with Piwik PRO Consent Manager supports setting prior-consent requirements. Built-in templates cover custom events and variables, form tracking, goal conversion, and virtual page views. Connections include Facebook Ads, Google Ads, YouTube, and templates providing access to thousands of integrations. Teams can also create behavior-triggered pop-ups and personalize site content using individual visitor data. The Business plan costs €36 a month, billed monthly, and includes up to 2 million monthly actions across up to 20 domains with 25 months of data retention; loading a Tag Manager container counts as an action. A 30-day trial is available, but there is no free plan. Enterprise tiers use custom quotes and offer public or private cloud hosting, including EU-operated servers and US HIPAA-compliant Azure.